Sole laying machine



Jan. 30, 1934. 5, J, FINN SOLE LAYING MACHINE 2 Shets-Sheet 1 Filed May 4. 1931 I 2 Sheets-Sheet 2 //v VE/V TUE.

4 55: 9 2v 5 N i 5 f0 5 9 Li /w 4? 6 5 1 30, 3 s. J. FINN SOLE LAYING MACHINE- Filed May 4, 1951 Fig: 2.;

Patented Jan. 30, 1934 I UNITED STATES PATENT OFFICE,

Shoe

Machinery Corporation, Paterson, N. 1.,

a corporation of New Jersey Application May 4, 1931. Serlal No. 534,888

10 Claims. (01. 12-121) This invention relates to sole-laying and similar machines in which a shoe is held against pressure, and is herein illustrated as embodied in a sole-laying machine of the type shown in U. S.

Letters Patent No. 1,495,163, granted May 27, 1924 upon an application filed in the name of Louis A. Casgrain.

Machines of this type are designed to lay or press into place rubber soles upon the bottoms of shoes which are subsequently to be subjected to vulcanization. To this end a lasted shoe, with its sole properly located upon and adhering to thebottom thereof, is placed right side up upon a pad in the form of a flexible diaphragm which forms the top wall of the pad box, there being provided a jack having a toe piece which engages the toe portion of the shoe and a heel piece which engages the top of the last, to hold the shoe against pressure applied to the bottom there- 20 of by forcing water into the pad box. The toe piece and heel piece are adjustable toward and from each other to provide for shoes of different lengths and are also adjustable vertically to provide for variations in thickness of the toe portions of shoes and for variations in height of lasts. In those factories in which the lasted shoes arrive at the sole-laying machine in large groups, the individual member's of which are all of the same style and size, adjustments of the toe piece and the heel piece need be made only infrequently. In many factories, however, for example those employing conveyor systems, the lasted shoes do not arrive in such groups. Instead they arrive in small groups or in pairs so that it is necessary to adjust the positions of the toe and heel pieces very frequently.

In order better to provide for conditions such as those last referred to, in which quick adjustments must be made, there is provided, in accordance with one feature of the invention, a jack comprising toe and heel pieces which are mounted upon a base for relative swingi movement toward and from each other and are individually quickly adjustable toward and from the pivots about which they swing. Inthe illustrated machine the base'carries two spaced pivots from which are hung two arms having sockets to receive respectively the stem of the toe piece and the stem of the heel piece. As illustrated, an adjusting screw having right and left hand threads which engage swiveled nuts on the arms provides means for simultaneously adjusting the toe and heel pieces toward and from each other to provide for shoes of difierent lengths. In order to provide means for quickly adjusting these pieces toward'and from the shoe to provide for different styles of shoes and heights of lasts the stems of the illustrated toe and heel pieces are provided with racks which are engaged by springpressed pawls carried respectively by the two 60 arms so that, when the pawls have been disengaged from the racks, the toe and heel pieces may be adjusted quickly toward and from the pivots about which they swing.

This and other features of the invention, in- 35 eluding certain details of construction and combinations of parts will be described as embodied in an illustrated machine and pointed out in the appended claims.

Referring to the accompanying, drawings:

Fig. 1 is a perspective of a portion of a solelaying machine in which the present invention is embodied; and,

Fig. 2 is a front elevation of a smaller portion of the machine upon an enlarged scale.

Before proceeding to describe the new construction, the old construction will be briefly set forth. The machine comprises a base 3 which supports a pad box 5 having as its top wall a rubber diaphragm 7, adjustable plates 9 being provided for shoes of different lengths. Water is forced in the box at the proper times and withdrawn therefrom through the pipe 11 by means of a force pump not shown. An overhanging arm 50 of the base carries suspended from a horizontal pivot and rotatable thereon a downwardly extending hollow sleeve 13 upon which a second sleeve 15 has a .sliding fit, said sleeve 15 being normally held up in the position shown by a tension spring, not shown, located inside the go hollow sleeves 13 and 15. The sleeve 15 is rigid with a casting 17 which carries the jack, the two telescoping sleeves 13, 15 forming an arm which may be swung out and elongated to cause the Jack to engage a lasted shoe which, with a rubber sole properly located upon its bottom, has previously been placed right side up upon the rubber diaphragm 7. These outward and downward movements of the jack are effected by forcing water through a pipe 19 and by providing suitable guiding slots 21 in stationary members in which rollers, not shown, carried by the sleeve 15, run. When water is withdrawn through the pipe 19, the parts return to the positions shown. No further description of the machine will be given, reference being made to the patent for details of construction. It will be understood, however, that after a lasted shoe with a sole upon its bottom has been placed upon the diaphragm '7 and a treadle depressed, the jack is swung out and 110 down to engage the lasted shoe and push it down slightly, whereupon the rubber diaphragm is pressed firmly against the bottom of the shoe and around the lower side portions thereof by water pressure acting through the diaphragm.

Slidably mounted in a dove-tailed guideway in the under side of the carrier 17 is a base 23. The forward portion of this base is split (Fig. 1) and a screw 22 (Fig. 2) threaded through one wall of the split portion and bearing against the other wall furnishes means for holding the base in adjusted position in its guideway. The screw 22 has a square head to receive a suitable wrench 24. The lower portion of the base 23 carries two pairs of alined pivots, the forward pair being shown at 25 and 27 (Fig. 1). Of the rear pair only one is shown at 29. From the forward pair of pivots is hung a depending arm 31 having a forked upper end to receive said pivots; and from the rear pair of pivots is similarly hung a depending arm 33. On the forward arm 31 is a swiveled nut 35, and on the rear arm 33 is a similar nut 37. These nuts have respectively right and left hand threads, and through them is threaded a screw 39 having spaced right and left hand threaded portions, said screw being held from longitudinal movement by a collar 41 thereon which engages a guideway formed in the base 23. By turning this'screw in one direction or the other the arms 31 and 33may be swung simultaneously toward and from each other.

The arm 31 has a guide in the form of a cylindrical socket to receive the stem 43 of a toe piece 45. This stem has a rack 47 with which engages a pawl 49 pivoted at 51 to the arm 31 and urged at all times into engagement with the rack by a compression spring 53. The toe piece is threaded upon the lower end of the stem 43 and held firmly in place by a lock nut 55. The arm 33 has a similar guide'in the form of a cylindrical socket to receive the stem57 of the heel piece 59, said heel piece being pivoted to the stem at 61 and having a fiat under face to engage the top of the last. This stem is provided with a rack 63 with which engages a pawl 65 pivoted at 67 to the arm 33 and acted upon by a compression spring 69. With a construction of this kind the toe and heel pieces may be quickly adjusted toward and from each other by turning the screw 39; and they may be quickly adjusted toward and from the shoe when the pawls 49 and 65 have been moved out of engagement with their respective racks.

Although the invention has been set forth as embodied in a'particular machine, it should be understood that the invention is not limited in the scope of its application to the particular machine which has been shown and described.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent of the United States is: I

1. A jack for holding a shoe against pressure having, in combination, a base, two pivots carried by said base, a toe piece adapted to engage the top of the toe portion of the shoe, said toe piece being mounted for swinging adjustment about one pivot and for bodily adjustment toward and from said pivot, a heel piece mounted for swinging adjustment about the other pivot and for adjustment toward and from said other pivot whereby the work-engaging parts of the jack may be quickly adjusted for shoes of different sizes, and means for holding said toe piece and heel piece in adjusted positions.

2. A jack for holding a shoe against pressure having, in combination, a base, two arms pivoted to said base for swinging movement toward and from each other to provide for shoes of different sizes, a toe piece adapted to engage the top of the toe portion of the shoe, said toe piece being bodily adjustable on one arm toward and from the pivot of said arm, a heel piece adjustable on the other arm toward and from the pivot of said other arm, means for holding the toe piece and the heel piece in adjusted positions, and means for holding the arms in various angular positions about their pivots.

3. A jack for holding a shoe against pressure having, in combination, a base, two arms pivoted to said base for swinging movement toward and from each other to provide for shoes of different sizes, each arm being provided with a guide extending at an angle to the axis of its pivot, a toe piece adapted-to engage the top of the toe portion of the shoe, said toe piece having a stem adjustably engaged with the guide of one arm and a heel piece having a stem adjustably engaged with the guide of the other arm, means for holding the stems in adjusted positions, and means for holding the arms in various positions into which they may be swung about their pivots.

4. A jack for holding a shoe against pressure having, in combination, a base, two arms pivoted to said base for swinging movement toward and from each otherto provide for shoes of diiferent sizes, each arm being provided with a socket extending at an angle to the axis of its pivot, a toe .piece adapted to engage the top of the toe portion of the shoe, said toe piece having a stem adjustably received in the socket in one arm, a heel piece having a stem adjustably received in the socket in the other arm, means for holding the stems in adjusted positions, and means for bolding the arms in difierent angular positions about their pivots.

5. A jack for holding a shoe against pressure having, in combination, a base, two arms pivoted to said base for swinging movement toward and from each other to provide for shoes of difierent sizes, each arm being provided with a socket extending at an angle to the axis of its pivot, a toe piece adapted to engage the top of the toe portion of the shoe, said toe piece having a stem provided with a rack adjustably received in the socket in one arm, a heel piece having a stem provided with a rack adjustably received in the socket in the other arm, means carried by the arms for detachably engaging the racks to hold the stems in adjusted positions, and means for holding the arms in different angular positions to which they may be swung about their pivots.

6. A jack for holding a shoe against pressure having, in combination, a base, two pivots carried by said base, two arms mounted respectively on said pivots, each arm having pivoted to it a nut, one of said nuts having a right-hand thread and the other a left-hand thread, an adjusting rod threaded through said nuts and held from longitudinal movement, a toe piece adjustable on one arm toward and from the base, a heel piece similarly adjustable on the other arm, and means carried by the respective arms for holding the toe piece and the heel piece in adjusted positions.

'7. A jack for holding a shoe against pressure having, in combination, a carrier, a base slidably adjustable in the carrier lengthwise of the shoe, a supporting member, and a shoe-engaging member slidably mounted thereon and depending therefrom, one of said members being provided with a rack and the other with a pawl to engage may be quickly adjusted with respect to the supporting member.

8. A jack for holding a shoe against pressure having, in combination, a base, two arms pivoted on the base for relative swinging movement toward and from each other, a toe piece and a heel piece mounted respectively on said arms for adjustment toward and from the pivots, and a single means for swinging said arms into and holding them in different angular positions to provide for shoes of difierent lengths.

9. A jack for holding a shoe against pressure having, in combination, a base, two arms depending frbm the base and pivoted to it 101 angular adJustment toward and trom each other, a toe piece and a heel piece mounted respectively onthearmstoradjustmenttowardandfromtbe pivots, and a screw having right and left hand threads adapted when turned to swing the arms toward and from each other to provide for shoes of different lengths.

10. A jack for holding a shoe against pressure having, in combination, a base, two arms depending from pivots on the base so as to be capable of being adjusted about the pivots toward and from each other, a toe piece and .a heel piece mounted respectively on the arms for adjustment toward and from the pivots, nuts swiveled respectively one upon eacharm and provided respectively with right-hand and with left-hand threads, and a screw also having right hand and left-hand threads threaded through said nuts and held from longitudinal movement. 

